Deep-well pumping apparatus



Jan. 7, 1930. H. F. CHILDERS 1,742,579

DEEP WELL PUMPING APPARATUS Filed June 21, 1928 s SheetsShee 1 bwentor6772/02 15,

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Jan. 7, 1930. H. F. CHILDERS DEEP WELL PUMPING APPARATUS Filed June 21,1928 3 Sheets-Sheet 2 Inventor h- C/fiz'fdars,

Jan. 7, 1930. H. F. CHILDERS 1,742,579

DEEP WELL PUMPING APPARATUS Filed June 21, 1928 5 Sheets-Sheet 3 nunuuumu nm u Inventor Patented Jan. 7, 1930 UNITED s'rATEs HARRY r.GI-IILDERS, or PONCA CITY, OKLAHOMA DEEP-WELL runrnve APPARATUSApplication filed June 21,

The present invention relates to improvements in deep well pumps and hasfor its principal object to provide an apparatus which includes the useof a hydraulic lifting 5 fluid.

One of the important objects of the present invention is to provide adeep well pumping apparatus that includes a double acting piston andvalve arrangement for effecting the discharge ofthe fluid from the well,in a positive and efficient manner.

Another important object of the invention is to provide a deep wellpumping apparatus which comprises a particular eduction tube arranged ina cylindrical pipe, a packer being carried by the eduction tube forengagement with the inner wall of said pipeto prevent the admittance oithe hydraulic lifting fluid to the lower portion ofthe pipe and thedouble acting piston unit operable in'th e lower portion of saideduction tube.

Still a -further object is to provide a deep well oumping apparatus ofthe above mentioned character which is simple in construction,inexpensive, strong and durable and further well adapted to the purposefor which it is designed.

Other objects of the invention will become apparent as the nature of theinvention proceeds and when taken in connection with the accompanyingdrawings.

In theaccompanying drawings, forming a part of this application andwherein like reierence characters desi nate like parts throughout theviews:

Figure 1 is a fragmentary vertical sectional view through theintermediate portionof the cylindrical pipe and eduction tube arrangedtherein showing the hydraulic piston and the piston rod associatedtherewith arranged in said eduction tube and also illustrating thepacker member.

Figure 2 is a similar section through the lower portion of the fluidpipe and eduction tubeshowing the position of the sliding cylinder andpiston in their uppermost positions.

Figure 3 is a cross sectional view taken approximately on the line 33 ofFigure 1.

Figure 4 is a similar section taken on the line H of Figure l,

1928. Serial No. 287,097.

Figure 5 is a cross sectional View, taken approximately on the line 55of Figure 2. Figure 6 is a cross sectional view, taken approximately onthe line 66 of Figure 1.

Figure 7 is a cross'sectional View, taken approximately on the line 77of Figure 2, anc

- Figure 8 is a diagrammatic View of the deep well pumping apparatus,embodying my invention. I

In the drawings, wherein for the purpose of illustration is shown thepreferred embodiment of my invention, the numeral 1 designates the usualcasing that extends downwardly into the well. Arranged within the 5casing is the pipe 2, the lower end thereof being reduced to provide afluid inlet' 3 and arranged'within the reduced portion is the valve cageunit 4:, the ball check valve in cluded in this unit being denoted bythe ref- 9 erence character 5. Arranged within the casing pipe 2 is theeduction tube 6 that is spaced with respect to the pipe 2, as clearlyshown in the drawings. -This eduction tube is spaced with respect to thelower end of the 5, pipe 2 and furthermore the "lower-end of theeduction tube is closed. The upper open end of the eduction tube extendsupwardly above the open upper end of the pipe 2, and has communicationwith a fluid discharge 8O conduit 7 in the manner as clearly illustratedin the diagrammatioview in Figure 8. The eduction tube is formed with alongitudinally extending arcuate shaped fluid by-pass 8, that is alsospaced from-the pipe 2, as clearly suggested in the cross sectionalviews in the drawings, and this by-pass extends from the lower end ofthe eduction tube to a point at a suitable distance below the upper endof the pipe, as suggested in Figure 8.

Formed on the outer wall of the eduction tube 6 is the tapered packer 9,that has snug engagement with the tapered portion 10 formed on the inner'wallof the pipe 2 as more clearly illustrated in Figure 1, whereby 5 toseal the upper portion of the pipe 2 with respect'to the lower portionof said pipe. The eduction tube 6 has communication with the casing 1,by means of the communi,- eating passages formed in the packer and the1" adjacent portion of the pipe, as shown generally at 11, also inFigure 1 of the drawings.

The eduction tube 6 is formed with a hydraulic lifting fluid inlet port12 and secured in this eduction tube directly above the inlet port 12 isthe cup packer shown at 13, in Figure 1, that is wedged into place. Theportion of the eduction tube directly below the packer 13 constituteswhat I term as a lifting fluid chamber 14, and operable within thisportion of the eduction tube is the hydraulic piston 15 that is securedat its upper end to the lower end of an actuating rod 16 that extendsupwardly through the cup packer 13 and the eduction tube. The upper endof this rod 16 is operatively connected to the walking beam 17 thatconstitutes a part of the usual pump power mechanism and included inthis power mechanism is the engine crank 18 that is operativelyconnected with the walking beam 17 by the member 19. A counter-weight 20is also operativelyassociated with the pivoted walkmg beam asillustrated in a diagrammatic manner in Figure 8. The purpose of thecounterweight will also be presently described.

A stufiing box 21 is associated with the bottom of the cup packer 13 forcooperation with the sliding rod 16 as indicated in Fig- 'ure 1.

downwardly through the eduction tube 6 through the stop forming plug 23that is threaded in the intermediate portion of the eduction tube assuggested in Figure 1 and the lower end of this suction rod 22 1s oper-,.,atively connected to a double acting piston unit 24, the constructionof which is more clearly illustrated in Figure 2.

Arranged for slidable movement within the lower portion of the eductiontube is the cylinder 25, the same being closed at its respective endsand the double acting piston 24 is operable within this cylinder. Astufiing box 26 is associated with the closed upper end of the cylinderthrough which the piston rod 22 is slidable. Furthermore, the closedupper end of the sliding cylinder 25 is adapted to engage with thebottom of the stop forming plug 23, when the cylinder is at itsuppermost position in the eduction tube. The

,lower end of this cylinder is formed with a threaded opening, in whichis removably secured the threaded plug 27.

The eduction tube 6 is formed with the upper and lower air releaseopenings 28 and 29 respectively, where indicated in Figure 2.

The eduction tube is furthermore formed with the fluid outlet ports 30and 31 respec tively that afiord communication between the eduction tubeand the by-pass 8 as shown in Figure 2.

The eduction tube is furthermore provided with the fluid inlet ports 32and 33, respectively that are located in the opposite side of the tubeand the inlet port 32 is located below the outlet port 30, while theother inlet port 33 is located above the other outlet port 31 as clearlyshown in Figure 2. The inlet ports 32 and 33 afl'ord communicationbetween the fluid chamber 34 and the eduction tube.

The sliding cylinder 25 is formed in its upper end portion with thespaced fluid outlet ports 35, that are adapted to have communicationwith the elongated outlet port 30 formed in the eduction tube 6, whenthe sleeve is in its uppermost position as shown in Figure 2. The upperportion of the sliding cylinder is formed with an additional series ofintake ports 36 located below the outlet ports 35 and these intake portsare adapted for communication with the intake port 32, formed in theeduction pipe 6.

When the outlet ports 35 are in communi cation with the outlet port 30,the intake ports 32 and 36 will be out of communication as shown inFigure 2.

Thelower portion of the sliding cylinder 25 is formed with a series ofoutlet ports 37 that are adapted to have communication with the outletport 31 formed in the lower end portion of the eduction tube, when thecylinder is in its lowermost position in said eduction tube. Formed inthe lower portion of the sliding cylinder above the outlet ports 37 arethe intake ports 38 that-cooperate with the intake port 33 andmanifestly, when the cylinder 25 is in the position shown in Fig ure 2,the intake ports 32 and 33 will be in registration while the outletports 31' and 37 will be out of registration with each other.

In the cross sectional view, there is clearly illustrated theconstruction of the various intake and outlet ports.

The improved deep well pumping apparatus may be brieflly described asfollows: Beginning with the piston 24 at the bottom or lower end of thestroke, the sliding cylinder 25, at the lower end of the shorter strokewith the plug 27 is adapted to rest on the lower end of the eductiontube 6. Further, the discharge port 37 in the lower end of the slidingcylinder will be in registration with the outlet port 31, and the inletor suction port 38 on the lower end of the cylinder will be out ofcommunication with the inlet port 33.

On the upper end of the sliding cylinder a reverse order takes place,that is to say, the intake port 32, and 36 will communicate and thedischarge ports 35 and 30 will be out of communication. This is theposition of the sliding cylinder at the lower end of the piston 24stroke so that the fluid being discharged through the outlet port willbe sucked in through the intake port.

The upward movement of the piston 24 in the cylinder 25, will cause thefluid already sucked into the piston to flow back out through thecommunicating intake port above but the ball check valve 5 will preventthe discharge of the fluid from the fluid chamber 34 back into the well.The fluid thus prevented from escaping by the action of the piston 24builds up sufficient pressure against the suction chamber and inside ofthe sliding cylinder to cause the sliding cylinder to move up until theupper end strikes the plug or stop 23, in which position the dischargeports 30 and 35 will be in registration with each other and the intakeports at the upper end of the cylinder andthe adjacent portion of theinduction tube will then be closed while on the other end of thecylinder the suction or intake ports will be opened and the dischargeports closed.

In this position, with the continued up stroke of the piston 24, thefluid is discharged through the ports into the by-pass 8 and in themeantime, additional fluid is sucked in after the piston 24 through thecommunicating intake ports 33 and 38 as well as permitting the flow offluid to fill the suction chamber 34 through the ball check valve 5.

During the upstroke, the hydraulic lifting fluid between the pipe andthe eduction tube 20 will act on the hydraulic piston 15 in the chamber14 and the same will be counterbalanced by the counter-weight 20 that isoperatively associated with the beam of the pump power mechanism. Inthis manner, only the necessary power is applied to lift the fluid outof the well. Further on the upstroke of the piston 24, fluid is admittedthrough the port 11 in the side of the hydraulic packer 9 and permittedto follow the hydraulic piston 15.

On the piston 24 reaching the height of its stroke and startingdownwardly, the same action takes place as before and the check valve 5holds the fluid in the suction chamber 34 until the piston 24 builds upsufficient pressure inside of the sliding cylinder to move the sameuntil the plug 27 strikes the lower closed end of the eduction tube, andwhen in such position, the discharge portion at the upper end of thecylinder and adjacent portion of the pipe or tube will be closed, whileintake ports will be opened, the lower discharge port being open and theadjacent intake port being closed.

lhe piston continues on its downward stroke, discharging the fluidthrough the bypass 8 and into the upper portion of the induction tubethrough the port 39 located above the cup packer 13 and on out of thewell through the discharge pipe 7 In the descent of the piston on thepumping stroke, the hydraulic lifting fluid functions and the counterweight is lifted outside of the well and the fluid between the pipe andinduction tube is permitted to act against the hydraulic piston whichhas a larger area exposed to the hydraulic fluid than that WlllChiseXposed to the fluid being forced out of the well by the piston 24.The hydraulic piston 15 in turn actuates the pump and the movement ofthepiston 24 effects the actuation of the communicating intake andoutlet port in the manner as above described. Ihe openings 28 and29provide means for releasing the air at the respective ends of thecylinders during the movement in the eduction pipe.

The port 11 acts as a release to the space arrangement of partsmay beresorted to, N,

without departing from the spirit of the inventionor the-scope of theappended claims. Having thus described the invention, what I claim asnew is i 1. In a deep well well casing, a pipe arranged in said casmg,the lower end of said pipe providing a fluid inlet jopening, a checkvalve therefor, an eduction tube arranged within said pipe and pumpingapparatus, a H

spaced therefrom to provide a fluid chamber,

a packercarried by the eduction tubeand engaging with the inner wall ofthe pipe toseal off thefluid chamber, the upper portion of the pipebeing adapted to contain a piston actuating fluid, a by-pass associatedwith the eduction tube, said eduction tube being provided withfluidoutlet ports that communicate with the by-pass, the eduction tube beingvformed with fluid inletports, a pressure its operated cylinder arrangedin the eduction q,

tubeand provided with inlet and outlet ports for communication with therespective. in-' let andoutlet ports of the'eduction tube atpredetermined periods, a piston operable within the sliding cylinder,means arranged A with the eduction tube for limiting the upwardslidingmovement of the cylinder, and an additionalpistonoperable withinthe upper portion of the eduction tube by the fluid in the upper portionof the pipe, said pistons being operatively connected together forsimultaneous actuation.

2. In a deep well pumping apparatus, a well casing, a pipe arranged insaid casing,

the lower end of said pipe providing a fluid inlet opening, a checkvalve therefor, an eduction tube arranged within said pipe and spacedtherefrom to providea fluid chamber, a packer carried by the eductiontube and engaging with the inner wall of the pipe to seal 3 off thefluid chamber, the upper portion of the pipe being adapted to contain apiston ac-- tuating fluid, a by-pass associated with the eduction tubebeing formed with fluid outlet and inlet ports, the outlet portscommuni- 5 eating with the by-pass, a pressure operated cylinderarranged in the eduction'tube and provided with inlet and outlet portsfor communication with the respective inlet and outlet ports of theeduction tube at predetermined periods, a piston operable within'thesliding cylinder, means arranged within the eduction tube for limitingthe upward sliding movement of the cylinder, an additional pistonoperable within the upper portion of the eduction tube by the fluid inthe upper portion of the pipe, said pistons being operatively connectedtogether for simultaneous actuation, the eduction tube being providedwith a lifting fluid intake port, a seal in the eduction tube directlyabove said intake port,

the aforementioned by-pass having communication with the upper end ofthe eduction tube at a point above said seal.

3. In a deep well pumping. apparatus, a 2 well casing, a pipe arrangedin the casing, a valved fluid inlet at the lower end thereof, aneduction tube arranged within the pipe and spaced therefrom tov providea fluid chamber, coacting packer forming members carried by the eductiontube and the inner wall of the pipe to seal off the fluid chamber, saidpacker forming members being provided with registering openings toafford communication between the education tube and the casing, theeduction tube and the pipe being formed with openingsregistering withthe aforementioned openings, the upper portion of the pipe being adaptedto contain a piston actuated. fluid, a by-pass associated with theeduction tube, said tube being provided with outlet ports thatcommunicate with the by-pass, and fluid inlet ports, a pressure operatedcylinder arranged in the eduction tube and providedwith inlet and outletports for communication with the respective inlet and outlet ports ofthe eduction tube at predetermined periods, a piston operable within thesliding cylinder, and a stop forming plug arranged in the eduction tubefor limiting the upward sliding movement of the cylinder.

In testimony whereof I aflix my signature.

HARRY F. GHlLDERS.

